HVAC Certification Requirements in Illinois No state license required to become HVAC technicians in Minnesota. Note: Federal law requires EPA certification. Tagged on: certification requirements, Illinois By Janice Kirkwood | September 2, 2013 | HVAC Certification Requirements | No Comments | ← HVAC Certification Requirements in Minnesota HVAC Certification Requirements in Michigan → Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Current [email protected] * Leave this field empty